H. J. Webber, Popular Science Monthly (1912)
“ Are we correct in assuming that all of the valuable plants and animals have already been introduced into cultivation? As a matter of fact, are we not justified in questioning whether the most valuable have been introduced? On sober second thought, does it not seem wonderful that wheat, a native of the Mediterranean region, should remain the best grain crop for a region including the greater part of British America and the United States, of Russia and Argentina and all the broad area where wheat is cultivated? ”
